Adjustment of structural and optical features of nanocomposite based on polyvinyl butyral film with antimony oxide for UV shielding and optoelectronics
Restricted accessResearch articleFirst published online April, 2026
Adjustment of structural and optical features of nanocomposite based on polyvinyl butyral film with antimony oxide for UV shielding and optoelectronics
In this paper, transparent polyvinyl butyral/antimony oxide (PVB/Sb2O3) nanocomposites with good UV shielding effectiveness are prepared. Solution casting was used to produce PVB/Sb2O3 nanocomposites with different Sb2O3 percentages. XRD and FTIR confirmed the interaction between PVB and Sb2O3. SEM and EDS mapping revealed that Sb2O3 nanoparticles with an irregular polygonal structure have a Sb/O ratio of ∼0.44. The integration of Sb2O3 resulted in a measurable alteration in PVB’s linear and nonlinear optical characteristics. For example, the reduction in transmittance of PVB was detected upon increasing the nanofiller content. Increasing the Sb2O3 ratio resulted in a reduction of the energy band gap of PVB, attributed to changes in localized energy states and defect levels within the host PVB’s band gap. Increasing the amount of Sb2O3 causes a rise in the refractive index, dispersion energy, static refractive index, and dielectric constant of nanocomposites. The results show that Sb2O3 can alter the optical properties of PVB, enabling it to be utilized in various applications, including UV protection, optical cables, anti-reflective films, and optoelectronic devices.
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